package com.wechat.wechat.service.impl;

import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;

import javax.websocket.OnClose;
import javax.websocket.OnMessage;
import javax.websocket.OnOpen;
import javax.websocket.Session;
import javax.websocket.server.ServerEndpoint;
import java.util.concurrent.CopyOnWriteArraySet;

/**
 * WebSocket发送消息
 * @author NN
 * @2020/2/29 19:18
 */
@Component
@ServerEndpoint("/webSocket")
@Slf4j
public class WebSocket {
    private Session session;
    private static CopyOnWriteArraySet<WebSocket> webSocketSet=new CopyOnWriteArraySet<>();

    //新的websocket连接打开
    @OnOpen
    public void onOpen(Session session){
        this.session=session;
        webSocketSet.add(this);
        log.info("【websocket消息】 有新的连接，总数：{}",webSocketSet.size());
    }

    //websocket连接关闭
    @OnClose
    public void onClose()
    {
        webSocketSet.remove(this);
        log.info("【websocket消息】 连接断开，总数：{}",webSocketSet.size());
    }

    //收到客户端发来的消息
    @OnMessage
    public void onMessage(String message){
        log.info("【websocket消息】收到客户端发来的消息：{}",message);
    }

    public void sendMessage(String message){
        for(WebSocket webSocket:webSocketSet){
            log.info("【websocket消息】广播消息：{}",message);
            try{
                webSocket.session.getBasicRemote().sendText(message);
            }catch (Exception e)
            {
                e.printStackTrace();
            }
        }
    }


}
